Like lots of high schoolers heading to their school dance this year, the 17-year-old Modern Family star flooded her Instagram with glamorous photos of her magical night. Escorted by her boyfriend Laurent Claude Gaudette, she Instagrammed: "Shmoopberry and I take prom."

And can we talk about the dress?! Winter looked absolutely gorgeous in her stunning, backless lace gown that included a seriously plunging neckline. Is this what the kids are wearing to prom these days, or just TV stars?